We'll create fresh WordPress site with bbPress2 shortcode whitelist installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin is designed to safely allow bbcode shortcodes and other
safe shortcodes to be embedded in bbpress topics and replies and also
blog comments. You don’t wan’t users entering shortcodes such as
[bbp-login] in the middle of their reply.
It doesn’t actually implement the shortcodes though,
for that you need a separate plugin. I recommend my own bbPress2
BBCode plugin, as this is fully whitelist aware, in that it also
parses the contents of the shortcodes, so [b][bbp-login][/b] also
gets parsed for safety. Something that doesn’t happen with non
whitelist aware shortcode plugins.